"I heard a thump and a vibration. You could hear the vibration, and I knew something was wrong. I just ran up the stairs from my machine, and I looked in the foundry, and all you could see was smoke and flames," foundry worker Mark Bailey said.

PEOPLE TO THE HOSPITAL. WE JUST CHECKED ON THEIR CONDITIONS--- RIGHT NOW WE KNOW THREE PEOPLE ARE AT THE BURN UNIT AT COLUMBIA ST. MARY'S HOSPITAL AND ONE IS IN THE EMERGENCY ROOM THERE. THE OTHER THREE WERE TAKEN TO OTHER LOCAL HOSPITALS. FIRE INVESTIGATORS SAY THE CREW WAS POURING HOT METAL INTO A CAST WHEN THE EXPLOSION OCCURRED. STATE FIRE INVESTIGATORS ARE NOW TRYING TO FIGURE OUT WHAT WENT WRONG. 12 NEWS TERRY SATER WAS THE FIRST REPORTER LIVE ON THE SCENE--- TERRY WORKERS ARE STUNNED. A FATHER OF ONE OF THE BURNED WORKERS TELLS US HIS SON WAS TREATED IN THE E-R AT AURORA GRAFTON AND WAS SENT HOME TONIGHT. BUT OTHERS ARE MORE SERIOUSLY BURNED. AN EXPLOSION AND FIRE WITH MULTIPLE INJURIES AT JOHNSON BRASS AND MACHINE FOUNDRY IN SAUKVILLE. MOLTEN METAL SPLASHED THEN BURNED AND HAD EMERGENCY CREWS SCRAMBLING TO TREAT THE MOST SEVERELY INJURED. WORKER STEVE CHRZANOWSKI SAW IT HAPPEN: STEVEN CHRZANOWSKI/ - ONE OF THE DYES JUST EXPLODED. THE NEXT THING YOU KNOW YOU'VE GOT FLAMES COMING UP AND EVERYBODY'S RUNNING TRYING TO GET FIRE EXTINGUISHERS. WE HAD TO TAKE A COUPLE PEOPLE OUT, HELP A COUPLE PEOPLE OUT. TWO GUYS FLIGHT FOR LIFE, A COUPLE BURNS. IN ALL SEVEN WORKERS BURNED. STEVEN CHRZANOWSKI/ - A COUPLE GUYS LAYING ON THE FLOOR. A COUPLE GUYS RUNNING AROUND WITH FIRE EXTINGUISHERS, TRYING TO GET THE GAS LINES SHUT OFF. MARK BAILEY/ FOUNDRY WORKER - I HEARD A THUMP AND A VIBRATION. YOU COULD HEAR THE VIBRATION. AND I KNEW SOMETHING WAS WRONG. I JUST RAN UP THE STAIRS FROM MY MACHINE AND I LOOKED IN THE FOUNDRY AND ALL YOU COULD SEE WAS SMOKE AND FLAMES. WITNESSES SAY IT APPEARS TWO SUPERVISORS STANDING ON TOP OF A LARGE PIECE OF MACHINERY GOT THE WORST OF IT. MARK EDBAUER'S SON WAS ALSO BURNED IN THE EXPLOSION: MARK EDBAUER - HE WAS IN THERE WHEN WHATEVER BLEW APART. HAD SOME MOLTEN METAL WENT DOWN HIS BACK. HE'S GOT JUST MINOR INJURIES. STEVEN CHRZANOWSKI/ - THERE WAS A FEW PEOPLE THAT, THEY ARE LITERALLY NOT WEARING UNIFORMS THAT WERE WEARING UNIFORMS AT THE TIME. CHRZANOWSKI'S WIFE RUSHED TO THE FOUNDRY: ASHLEY CHRZANOWSKI - I THANK THE GOOD LORD. I THANK THE GOOD LORD THAT HE'S OKAY. I WORRY ABOUT HIM WORKING IN A FOUNDRY EVERY DAY FOR SURE. I ASKED A WORKER IF HE THOUGHT THE FOUNDRY WAS OPERATED SAFELY AND HE SAID YES, CITING SAFETY MEETINGS, AND DISCUSSIONS ABOUT MAKING SURE EQUIPMENT AND PROCEDURES ARE UP TO DATE. HE CALLED THE ACCIDENT A FLUKE. THE STATE FIRE MARSHALL IS INVESTIGATING THE CAUSE.